$ git clone -n https://src.fedoraproject.org/rpms/R-whoami.git /var/lib/mock/f38-build-side-42-init-devel-672406-26681/root/chroot_tmpdir/scmroot/R-whoami
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-672406-26681/root/chroot_tmpdir/scmroot/R-whoami'...
$ git fetch origin d8c8f3155d2545969e63592b299fe7a22002b338:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-whoami
 * [new ref]         d8c8f3155d2545969e63592b299fe7a22002b338 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d8c8f31 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild